سورس پروژه سنگ كاغذ قيچي به زبان سي پلاس پلاس

#include <iostream.h>
#include <stdlib.h>
#include <time.h>

#define WINSCORE 3

// Function PickRandomOption
// * Returns a random character between 's', 'x', and 'p'
char PickRandomOption (void)
{
char option;
srand ( time (NULL) ); // (re)initialize random number generator
int value = rand()%3; // Generate random number between 0 and 2

switch (value) {
case 0: option='s'; break;
case 1: option='x'; break;
case 2: option='p'; break;
}
return option;
}

// Function WhoWins
// * check which of the characters passed wins.
// return values:
// 0= tie, 1=the first, 2=the second, -1=error
int WhoWins (char a, char b)
{
switch (a)
{
case 's':
if (b=='x') return 1;
else if (b=='p') return 2;
else return 0;
case 'x':
if (b=='p') return 1;
else if (b=='s') return 2;
else return 0;
case 'p':
if (b=='s') return 1;
else if (b=='x') return 2;
else return 0;
default:
return -1;
}
// NOTE: no break instructions were included in this switch statement
// because a break instruction at the end of a case would never
// been executed because there would always be a return statement
// executed before.
// For the same reason this peculiar function has no explicit ending
// return statement.
}

main ()
{
char you, me;
int mypoints=0;
int yourpoints=0;
int winner;

do {
//prompt user.
cout << "\nEnter s, x or p ";
cout << "(s=stone, x=scissors, p=paper): ";
cin >> you;

//decide computer's option and say it
me = PickRandomOption();
cout << "I say: " << me << "\n";

// check who is the winner
winner = WhoWins (you,me);

// show appropiate message:
if (winner==0) cout << "Tied\n";
else if (winner==1) { cout << "You win\n"; yourpoints++; }
else if (winner==2) { cout << "I win\n"; mypoints++; }
else cout << "Sorry. You entered an Invalid option\n";

// show current scoreboard.
cout << "POINTS: You:" << yourpoints;
cout << " Me:" << mypoints << "\n";

} while (yourpoints<WINSCORE && mypoints<WINSCORE);

if (yourpoints>mypoints) cout << "You win the competition!\n";
else cout << "I win the competition!\n";
return 0;
}